dcrouter/test/suite/smtpclient_reliability/test.crel-07.resource-cleanup.ts

import { tap, expect } from '@git.zone/tstest/tapbundle';
import { createTestServer } from '../../helpers/server.loader.js';
import { createTestSmtpClient } from '../../helpers/smtp.client.js';

tap.test('CREL-07: Resource Cleanup Tests', async () => {
  console.log('\n🧹 Testing SMTP Client Resource Cleanup');
  console.log('=' .repeat(60));

  const testServer = await createTestServer({});

  try {
    console.log('\nTest 1: Basic client creation and cleanup');
    
    // Create a client
    const smtpClient = createTestSmtpClient({
      host: testServer.hostname,
      port: testServer.port
    });
    console.log('  ✓ Client created');

    // Verify connection
    try {
      const verifyResult = await smtpClient.verify();
      console.log('  ✓ Connection verified:', verifyResult);
    } catch (error) {
      console.log('  ⚠️ Verify failed:', error.message);
    }

    // Close the client
    smtpClient.close();
    console.log('  ✓ Client closed');

    console.log('\nTest 2: Multiple close calls');
    const testClient = createTestSmtpClient({
      host: testServer.hostname,
      port: testServer.port
    });

    // Close multiple times - should not throw
    testClient.close();
    testClient.close();
    testClient.close();
    console.log('  ✓ Multiple close calls handled safely');

    console.log('\n✅ CREL-07: Resource cleanup tests completed');

  } finally {
    testServer.server.close();
  }
});

tap.start();